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  • (a) Work out a cross upto -generation between true breeding tall pea plants bearing violet flowers and dwarf pea plants bearing white flowers. (b) Explain

(a) Work out a cross upto F_{2}-generation between true breeding tall pea plants bearing violet flowers and dwarf pea plants bearing
white flowers.

(b) Explain Mendel’s laws of segregation and independent assortment on the basis of the cross.

 

 

 

 
 
 
 
 

Answers (1)

a). 

Phenotypic ratio:

Tallviolet : Tallwhite : dwarf violet : dwarf white

     9       :       3       :      3              :      1

 

(b) Law of segregation:-

This law is based on the fact that the alleles do not show any blending and that both the characters are recovered as such in the f_{1} stage.

Through the parents contain two alleles during gamete formation, the factors or alleles of a pair segregate from each other such that a gamete receives only one of the two-factors.

 

Law of Independent Assortment -

When two pairs of traits are combined in a hybrid, segregation of one pair of characters is independent of the other pairs of characters.

 

Phenotypic ratio - round yellow: round green: wrinkled: yellow: Wrinkled green

                                      9           :         3          :        3          :           1

 

            

Posted by

Priyanka Kumari

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